The invention relates to a mineral separation method, in particular to a strongly magnetic mineral accurate magnetic separation method, and belongs to the field of mineral separation. The method is mainly applied to strongly magnetic mineral wet mineral separation. According to the method, ore pulp is made to flow through a magnetic field with the magnetic field intensity being from weak to strong, through automatic matching of ore grains and the magnetic field, magnetic force borne by strongly magnetic particles with different magnetisms is in a minimum value for recovering the ore grains, inclusions are reduced while the strongly magnetic particles are effectively recovered, and the high recovery rate is obtained while high-grade concentrate is obtained.